The abuse was discovered following an anonymous tip-off from a member of the public in April last year. Police removed the girl from the home and later charged the seven men with 503 offences between them.

One of the convicted men, married Christian pastor David Volmer, was sent to prison for at least eight years and six months last year.

Another, Benjamin Simon Clarke, was jailed for three years earlier this month for taking explicit photos of the child.

Mark Wesley Liggins, who was arrested as part of the investigation but not accused of abusing the victim directly, was sentenced to two years.

Nicholas Adam Beer pleaded guilty to 163 charges and is expected to be sentenced in November.

Another three men arrested in connection with the case still have their cases pending.

Prosecutor Justin Whalley described it as one of the worst child sex abuse cases to come before the court in the history of the state.

He said the girl was entitled to look to her father for protection but instead she got abuse and degradation.

He told the court: "In terms of his remorse, we say, if it exists, it is certainly belated."

Summing up the case, Judge Philip Eaton said the abuse was likely to have "lasting and irreparable consequences" for the girl.

He said: "You completely disregarded her welfare. I have no doubt that you derived perverse sexual enjoyment while doing so.

"You in fact allowed complete strangers to treat your daughter as a sexual object and treated her like that yourself."